KR101798791B1 - The manufacturing method for rice with enhanced resistant starch - Google Patents

Abstract

The present invention relates to a method for manufacturing rice with enhanced resistant starch. According to the present invention, the content of resistant starch in rice can be enhanced. Also, effective components coated on the surface of rice are not separated and can be stored for a long period of time. When steamed rice is cooked by using rice manufactured by the method and taken, blood sugar level of diabetic patients can be reduced; it is helpful for diabetic patients as a low-calorie meal; and tastes and flavors of steamed rice can be enhanced.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method for producing rice with enhanced resistance to starch,

The present invention relates to a method for producing rice with improved resistance starch content.

Starch is an important storage material that is widely distributed in most plants. Starch is a long chain carbohydrate that is stained with a potassium iodide solution in black blue and appears as a starch phase on the indenter. The starch in the chloroplast first made by photosynthesis is called assimilation starch and the starch stored in the storage organ is called the reserve starch. And, when the assimilated starch or stored starch is transferred to another tissue, it can be stored temporarily during the movement, which is called a transitory starch.

The starch used by a person is all stored starch, and potato tuber, sweet potato root, seed, and fruit are professional storage organisms and store unheated starch.

Resistant starch means that some of the starch ingested is not digested, which is called resistant starch (RS). The reason for not being digested is as follows: First, amylase does not work when grain is partially processed, such as brown rice, or when it exists as small grain. Second, enzyme activity is impossible when starch is not partially hydrolyzed. The starch structure becomes gelatinous during the aging process and the efficiency of the digestive enzymes decreases or becomes impossible. As such, starch that is not digested in the digestive system acts like dietary fiber, and fermentation takes place by bacteria in the large intestine. The amount of the resistant starch contained in the food is affected by the source, the degree of aging, the degree of grinding, the degree of grinding of the kernel, the processing process, the cooking and storage method, The importance of resistant starch acts like dietary fiber, so diabetes. obesity. Coronary artery disease, and 1 g of resistant starch can be used as a weight loss agent since it produces about 2.15 to 2.34 kcal of calories.

Resistant starch (RS) is classified into four types. RS1 means a starch which is difficult to meet the enzyme, RS2 means a raw starch having a crystal form of B-type such as potato, banana starch and high amylose corn starch, and since the resistance to the enzyme is lost when heated, It is a form that can not be used for foods to be heated such as processed foods. For example, a method for increasing the R2 content is disclosed in Korean Patent Publication No. 2004-0065072. Korean Patent Laid-Open Publication No. 2004-0065072 discloses that the RS content can be increased by adding acid treatment and heat treatment to starch in preparing crosslinked starch. RS3, on the other hand, is the starch aged by heating. The higher the amylose content, the higher the RS yield. Currently, the US and Europe are producing Novelose 330 and Crystalean, which are branched from starch and subjected to heating and cooling processes. They do not maintain the same shape as raw starch particles, and some become amorphous by heating, The absorption rate is increased compared to the live mass. Once the absorbed RS3 starch has no further volume increase by heating, it can have a stable structure during cooking and processing. Starch, made by chemical modification, is also resistant to enzymes, called RS4. RS4 exhibits a particle shape such as a viable powder by crosslinking, and the swelling power can be different depending on the production method. RS4 type starches can be prepared by chemical treatments such as cross-linking, esterification, etherification and lintnerization, and cross-linking RS4 starch, which is a chemical modified starch, has been known. For example, in Korean Patent Publication No. 2002-0070671, crosslinked resistive starch having an RS4 form in which a raw starch powder is annealed and a surfactant is added to increase the yield of resistant starch and to facilitate crushing is disclosed.

Therefore, the inventors of the present invention have developed rice which can improve the content of resistant starch during research on resistant starch.

Published Japanese Patent Application No. 10-2004-0065072 (published on July 21, 2004) Published Patent Application No. 10-2002-0070671 (published September 2002)

It is an object of the present invention to provide a method for preparing rice by coating a surface of rice with a coating solution capable of improving the content of resistant starch.

According to a preferred embodiment of the present invention, there is provided a method for preparing a pharmaceutical composition comprising the steps of: preparing a coating liquid containing at least one of stigmasterol, betasitosterol, campesterol and serotonin; Laser treating the coating solution; And coating the coating solution on the surface of the rice, wherein the coating solution is coated at a weight ratio of 1: 0.01 to 0.5.

The beta-sitosterol may be contained in an amount of 5 to 150 parts by weight, the campesterol may be 50 to 200 parts by weight, and the serotonin may be added in an amount of 5 to 150 parts by weight based on 100 parts by weight of the stigmasterol.

The wavelength of the laser treatment is 1,040 to 1,056 nm and the frequency is 5.2 to 5.6 Hz.

Further, the present invention is characterized by further comprising drying the coated rice so that the moisture content of the coated rice is 15 to 18% by weight.

The method for producing rice according to the present invention has an effect of improving the content of resistant starch of rice.

Further, the present invention has the effect that the active ingredient coated on the rice surface can be stored for a long period without being peeled off.

In addition, when rice prepared by using the rice produced by the present invention is cooked, the blood sugar of a diabetic patient is reduced, the diabetic patient is assisted by a low-calorie diet, and the taste and flavor of rice can be improved .

Hereinafter, the present invention will be described in detail. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. Therefore, the constitutions described in the embodiments described herein are merely the most preferred embodiments of the present invention, and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents which can be substituted at the time of application It should be understood that variations can be made.

A method for producing rice with improved resistance starch content according to the present invention comprises:

Preparing a coating liquid containing at least one of stigmasterol, beta-sitosterol, campesterol, and serotonin;

Laser treating the coating solution; And

Coating the surface of the rice with the coating solution, and coating the rice and the coating solution at a weight ratio of 1: 0.01 to 0.5.

Hereinafter, the method for producing rice of the present invention will be described in detail.

First, a coating solution containing at least one of stigmasterol, betasitosterol, campesterol, and serotonin is prepared.

The stigmasterol is a phytosterol having an average particle size of about 40 nm and having a double bond in the side chain. The stigmasterol is also used as a synthesis agent for various steroid hormones. Formula is C ₂₉ H _48O molecular weight has a double bond between 22 and 23 times as carbon 412.691, melting point 170 ℃ is distinct from the cholesterol in the point. It is also widely distributed in plant seeds and beans, nuts, vegetables, and raw milk, such as about 25% of soy sterols, kidney beans, palm oil and seed oil, and Ophiopogon japonicus. It can be used as a raw material for hormone synthesis as a sterol that is extracted and purified from unsaponifiables of soybeans. In addition, the stigmasterol is effective for lowering the cholesterol level, and is also effective for treatment of cancer, skeletal pain, stiffness, neuralgia, fever, pain, tightness and the like.

The beta-sitosterol is a type of phytosterols having an average particle size of about 40 nm, and its structure is similar to that of cholesterol but is different from cholesterol according to the ethyl group. It is abundant in most plants, and it is abundant in rice bran, peanut, beans, pumpkin seed, corn oil, radish, cabbage, The chemical formula is C ₂₉ H _{50 O} and its molecular weight is 414, which is not well soluble in water or a fat-soluble solvent and has been mainly used in pharmaceuticals. However, the forms found in nature are mainly in the form of esters or glycosides, both of which are more soluble than beta-sitosterol itself. In addition, beta - sitosterol is effective in reducing blood cholesterol, anti - cancer and immune - enhancing effects as well as in colorectal cancer and benign prostatic hyperplasia, and is effective in controlling blood glucose levels in patients with type 2 diabetes. The beta-sitosterol component plays a role in enhancing cardiovascular function by inhibiting the accumulation of cholesterol in the blood. It competes with low density lipoprotein (LDL) and inhibits the absorption of cholesterol in the human body. In addition, it induces apoptosis of cancer cells and inhibits the proliferation of cancer cells. In addition, there are anti-ulcer, anti-bacterial, anti-inflammatory and antioxidant effects.

The campesterol has an average particle size of about 80 nm, is called plant sterol, and chemically similar to cholesterol. Camptesterol is classified as cholestane-based 4-desmethylsterols in that the presence of a methyl group at the 24th carbon site of the side chain is different from that of cholesterol. Formula is C ₂₈ H _48O, and the molecular weight is 400.68, and the soy beans are present in plant seeds and sunflower seeds. The campesterol is effective in reducing the risk of coronary heart disease by lowering LDL-cholesterol levels by replacing cholesterol with total-cholesterol and bile acid salts or inhibiting cholesterol esterification in the intestinal mucosa. In addition, campesterol is effective in suppressing dietary cholesterol absorption and endogenous cholesterol reabsorption of the gastrointestinal tract and reducing serum cholesterol levels by excretion of cholesterol into the feces.

The serotonin has an average particle size of about 80 nm and is one of the neurotransmitters present in the hypothalamus of the brain. It is a chemical substance derived from tryptophan which is an amino acid, and is a substance that acts as a vasoconstrictor that is released into the serum from platelets when blood coagulates. It is contained in the brain, visceral tissues, platelets, and mast cells, and is also called 5-hydroxytryptamine. Serotonin not only controls mood, but is involved in many functions related to appetite, sleep, and muscle contraction. It is also associated with thinking function, which affects memory and learning, and is stored in platelets and is involved in hemostasis and blood coagulation. Therefore, when serotonin is inadequate, it causes depression and anxiety. It also acts as an important regulator of appetite and food choices and is most linked to carbohydrate intake. Increased serotonin locally causes appetite to decline, and declines in the opposite direction.

The β-sitosterol may include 5 to 150 parts by weight, more preferably 10 to 100 parts by weight, and most preferably 30 to 80 parts by weight, based on 100 parts by weight of the stigmasterol. Section. Herein, when the beta-sitosterol is contained in an amount less than the stated content, the resistant starch can not be increased, and when it is contained in an amount exceeding the stated content, the solubility is deteriorated.

The camphesterol may preferably contain 50 to 200 parts by weight, more preferably 80 to 150 parts by weight, and most preferably 90 to 120 parts by weight, based on 100 parts by weight of the stigmasterol. Section. Herein, when the campesterol is contained in an amount less than the stated content, the resistant starch can not be increased, and when it is contained in an amount exceeding the stated content, the solubility is poor.

In addition, for 100 parts by weight of the stigmasterol, the serotonin may preferably comprise 5 to 150 parts by weight, more preferably 10 to 100 parts by weight, and most preferably 30 to 80 parts by weight . Here, when the campesterol is contained in an amount less than the stated content, the flavor of the rice is lowered and the resistant starch can not be increased. When the content exceeds the above-mentioned content, digestion becomes difficult.

Next, the coating solution prepared above is irradiated with a laser.

Here, it is preferable that the laser beam has a wavelength of 1,040 to 1,056 nm, a frequency of 5.2 to 5.6 Hz, and an average output optical power of 85 to 95 W. When the laser is irradiated within the range described above, the cohesive force of the coating solution becomes higher due to the supermagnetic nanoparticle properties, which has an advantage of increasing the coating efficiency upon coating with rice. In addition, when the coating solution for laser irradiation is coated on the surface of rice, it has an advantage that it can be maintained without surface peeling for 6 to 12 months.

The laser irradiation is preferably conducted for 2 to 10 minutes.

The laser-irradiated coating solution may be mixed with water in a dispersion solvent, and the coating solution and water are preferably mixed at a weight ratio of 500 to 1,500: 1. If the content of the coating liquid is less than the content described above, the effect of the resistant starch can not be improved. If the content of the coating liquid exceeds the content described above, It is difficult to uniformly coat the surface.

Next, the coating solution prepared above is coated on the surface of rice to obtain rice with a high resistance starch content.

Here, the rice to be coated can be cleanliness obtained by washing the brown rice or white rice beforehand. Before coating, the rice is preferably dried at 50 to 80 캜 and dried to have a water content of 15 to 25% by weight. In this case, drying is preferably carried out by natural drying or hot air drying.

Then, the coating liquid is coated on the surface of the prepared rice. Examples of the coating method include a method of immersing or spraying rice in the coating solution.

The rice and the coating liquid are preferably coated at a weight ratio of 1: 0.01 to 0.5, and most preferably 1: 0.01 to 0.2. When coated at the weight ratio described above, it can be uniformly coated on the surface of rice and maximize the content of resistant starch.

When the coating solution is coated on the surface of rice, it may be coated more than once.

For example, 0.06 part by weight of the coating liquid may be coated once on the surface of the rice, and the coating liquid may be further coated on the surface of the rice by 0.06 part by weight with respect to the weight of the rice.

When the coating is completed, the coated rice may further be dried to have a water content of 15 to 18% by weight.

The rice produced in the present invention can be cooked in the following manner to enhance the resistant starch content.

Generally, when rice is cooked, a temperature of 100 ° C or more is applied to rice. At this time, the amylose in the starch contained in the rice and the coating solution are hydrogen bonded, and the hydrogen bond in the amylose is reformed to change the bonding angle. The existing amylose hydrogen bonding angle is 104.2 ° C, but the hydrogen bonding angle through the reforming of the hydrogen bonding is 104.7 ° C. Therefore, since it resists amylase that decomposes starch, starch is not decomposed into glucose, but is discharged to the outside of the body as it is.

When the rice is cooked using the resistant starch-reinforced rice according to the present invention, the amount of glucose absorbed into the body is reduced, the blood sugar level is decreased, and the calorie absorbed is reduced, thereby having a diet effect.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Hereinafter, the present invention will be described in more detail with reference to Examples. It is to be understood by those skilled in the art that these embodiments are only for describing the present invention in more detail and that the scope of the present invention is not limited by these embodiments in accordance with the gist of the present invention .

Example  One.

67 parts by weight of beta-sitosterol, 100 parts by weight of campesterol, and 67 parts by weight of serotonin were mixed to prepare a mixture based on 100 parts by weight of stigmasterol. Here, the mean particle size of the mixed composition was 40 nm for stigmasterol and beta-sitosterol, and 80 nm for campesterol and serotonin.

Subsequently, silicon paper having a thickness of 0.3 mm and a diameter of 30 cm was prepared. The silicon paper used in the examples was prepared by cutting a thin single crystal silicon having a purity of 99.9999999% and smoothening the surface. Then, the mixture prepared on the silicone paper was applied to 0.2 mm. The silicon paper coated with the mixture was irradiated with a laser having a wavelength of 1,048 nm, a frequency of 5.2 Hz and an average output optical power of 90 W for 3 minutes.

Then, the water and the mixture were mixed at a weight ratio of 1,000: 1, and then the mixture was added to a stirrer and stirred at 500 RPM for 5 minutes to prepare a coating solution of rice.

The preliminarily cleaned white rice was dried at 65 ° C to prepare a water content of 20% by weight. Then, the rice and the coating solution were adjusted to a weight ratio of 1: 0.04 to spray the rice first, Was sprayed to the surface of the coating liquid at a 0.06 weight ratio. The second spray-coated rice was dried at 80 ° C. to a water content of 15% by weight to prepare rice.

Finally, 200 g of the above-prepared rice was put into a general rice cooker to cook rice.

Comparative Example  One.

200 g of rice was put into a general rice cooker using commercially available white rice.

Evaluation example  One. Resistance starch  evaluation

AOAC type was measured for Example 1 and Comparative Example 1. To 1.0 g of sample, 40 ml of MES-Tris buffer solution (pH 8.2) is added and dispersed well. 0.1 ml of heat stable α-amylase (Cat No. A-3306, Sigma) was added, and the mixture was allowed to react for 15 minutes while stirring in a boiling water bath (100 ° C.). To this, 0.1 ml (50 mg / ml MES-Tris buffer) of Protease (Cat No. P-3910) was added and the mixture was reacted for 30 minutes at 60 ° C on a shaking table for 30 minutes. Then, 5 ml of HCl was added thereto to adjust the pH to 4.6, and then amyloglucosidase Cat No. A-9913, Sigma) was added thereto, and the reaction was continued at 60 캜 for 30 minutes. To stop the reaction, 95% ethanol was added so that the total alcohol concentration was 80%, and the solution was allowed to stand for 1 hour or more. Then, the solution was filtered with a glass filter containing about 0.5 g of acid washed celite. Washed with 95% and 78% ethanol and acetone, and the insoluble residue was dried in a 100 ± 5 ° C oven until the desired content was obtained and the weight was measured and calculated.

Production rate (%) of resistant starch = {weight of insoluble residue (g) / weight of sample (g)} X 100

The results of the resistance starch production rate are shown in Table 1 below.

division moisture Carbohydrate Fat protein fibrin Ash Resistance starch Example 1 11.0 g 78.9g 2.5 g 8.9 g 2.7g 1.2 mg 7.98% Comparative Example 1 12.3 g 78.8g 1.1 g 6.9 g 0.3 g 0.6 mg 1.2%

As shown in Table 1, it was found that the resistance starch production rate of the Examples was about 6 times higher than that of the Comparative Examples.

Thus, it was confirmed that the rice prepared according to the present invention improved the content of resistant starch.

Claims (4)

Preparing a coating solution containing 30 to 80 parts by weight of betasitosterol, 90 to 120 parts by weight of campesterol and 30 to 80 parts by weight of serotonin based on 100 parts by weight of stigmasterol;
Treating the coating liquid with a laser having a wavelength of 1,040 to 1,056 nm, a frequency of 5.2 to 5.6 Hz and an average output optical power of 85 to 95 W for 2 to 10 minutes;
Coating the surface of the rice with the coating liquid, wherein the rice and the coating liquid are coated at a weight ratio of 1: 0.01 to 0.2; And
And drying the coated rice so that the moisture content of the coated rice is 15 to 18% by weight.

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